CN111245165A

CN111245165A - Electric machine

Info

Publication number: CN111245165A
Application number: CN201811442606.5A
Authority: CN
Inventors: 刘建成; 李虹
Original assignee: Shanxi Baixiao Kerui Technology Co ltd
Current assignee: Shanxi Baixiao Kerui Technology Co ltd
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2020-06-05

Abstract

The application discloses motor, including coaxial arrangement and as an organic whole installation connection's motor part and controller part, motor casing of motor part with the cross section appearance of controller part's controller casing is unanimous. This motor adopts integrative installation connection structure, and controller part and motor part coaxial arrangement, consequently, compare with current split type motor, the total volume of this motor only exceeds 1/3 more than the motor part, has reduced the volume, has lightened weight, does not need the field installation.

Description

Electric machine

Technical Field

The invention relates to the technical field of motors, in particular to a motor.

Background

The motor is a common power output device, and the existing motor is usually formed by separately mounting an independent motor part and a controller part. The motor component and the controller component are respectively provided for users to install, and the motor has the defects of large volume, heavy weight, complex field assembly, low protection level and the like.

Therefore, how to solve the problems of large volume, heavy weight and complex field assembly of the split type motor becomes a problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

In view of this, the present invention provides a motor to integrate a motor and reduce the size and weight of the motor.

In order to achieve the purpose, the invention provides the following technical scheme:

the motor comprises a motor component and a controller component which are coaxially arranged and integrally installed and connected, wherein a motor shell of the motor component is consistent with the cross section of a controller shell of the controller component in shape.

Preferably, in the motor, a direct current outlet cavity and a control outlet cavity are further arranged in the controller housing, and the direct current outlet cavity is used for accommodating a direct current outlet; the control outgoing line cavity is used for accommodating a control outgoing line.

Preferably, in the motor described above, the controller cooling medium flow passage in the controller case communicates with the motor cooling medium flow passage in the motor case.

Preferably, in the motor described above, the controller cooling medium flow passage and the motor cooling medium flow passage have the same cross-sectional size.

Preferably, in the above motor, the controller part includes the controller housing, a controller end cover and a controller module located inside the controller housing, and the controller end cover is mounted at one end of the controller housing far away from the motor part; the controller module is connected with the stator winding of the motor component through a current collecting disc.

Preferably, in the above-mentioned electric machine, the controller module includes a power component, a capacitor component, a control component, a dc component and an ac component;

the alternating current assembly is connected with one end of the power assembly, and the alternating current assembly is connected with the stator winding through the power collecting disc;

the control assembly is arranged at one end of the controller shell close to the motor part and is connected with the power assembly;

the power assembly is arranged between the periphery of the capacitor assembly and the inner wall of the controller shell;

the direct current end assembly is arranged between the capacitor assembly and the end face of the controller end cover, and the direct current end assembly is connected with an external direct current power supply, the positive direct current terminal and the negative direct current terminal of the power assembly and the capacitor assembly.

Preferably, in the motor, the shape of the inner ring of the cross section of the controller shell is a polygon, the shape of the cross section of the capacitor shell of the capacitor assembly is a polygon, and is the same as the shape of the inner ring of the cross section of the controller shell, each edge of the capacitor shell is in supporting connection with the corresponding edge of the inner ring of the controller shell, and the capacitor is accommodated in the capacitor shell.

Preferably, in the motor, a gap between the capacitor and the capacitor case is filled with a thermally conductive paste; and one power assembly is tightly attached and fixed between each inner wall surface of the controller shell and the corresponding outer wall surface of the capacitor shell.

Preferably, in the motor, the power module includes an elastic body and a heat generating component, and the heat generating component is fixed to the elastic body so as to be attached to an inner wall surface of the controller case.

Preferably, in the motor, each edge of the capacitor shell is provided with a first positioning structure, and each edge of the inner ring of the controller shell is provided with a second positioning structure which is supported and positioned with the first positioning structure.

Preferably, in the motor, the first positioning structure is a positioning groove, and the second positioning structure is a positioning protrusion;

or the first positioning structure is a positioning protrusion, and the second positioning structure is a positioning groove.

Preferably, in the motor, a heat insulation pad is arranged between the control assembly and an inner end cover of the motor component.

Compared with the prior art, the invention has the beneficial effects that:

in the motor provided by the invention, the motor part and the controller part are coaxially arranged and integrally installed and connected, and the cross section of the motor shell of the motor part is consistent with that of the controller shell of the controller part. This motor adopts integrative installation connection structure, and controller part and motor part coaxial arrangement, consequently, compare with current split type motor, the total volume of this motor only exceeds 1/3 more than the motor part, has reduced the volume, has lightened weight, does not need the field installation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an exploded schematic view of an electric machine according to an embodiment of the present invention;

fig. 2 is an exploded view of a controller component of an electric machine according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a power assembly of an electric machine according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a capacitor assembly of an electric machine according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a controller housing of a motor according to an embodiment of the present invention.

Wherein, 1 is a controller part, 2 is a motor part;

11 is a controller end cover, 12 is a direct current terminal assembly, 13 is a capacitor assembly, 131 is a capacitor, 132 is a capacitor shell, 1321 is a first positioning structure, 14 is a power assembly, 141 is an elastic body, 142 is a heat generating component, 15 is a controller shell, 151 is a capacitor, 152 is a capacitor shell, 153 is a second positioning structure, 16 is an alternating current assembly, and 17 is a control assembly;

21 is a motor shell, 22 is a motor stator, 23 is a motor rotor, 24 is a current collecting disc, and 25 is a motor inner end cover.

Detailed Description

The core of the invention is to provide the motor, which realizes the integration of the motor and reduces the volume and the weight of the motor.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a motor, which includes a motor part 2 and a controller part 1, wherein the motor part 2 includes a motor housing 21, a motor rotor 23 and an electronic stator 22, the controller part 1 includes a controller housing 15, the motor part 2 and the controller part 1 are coaxially arranged and integrally installed, and the cross-sectional shapes of the motor housing 21 and the controller housing 15 are the same.

This motor adopts integrative installation connection structure, and controller part 1 and motor part 2 coaxial arrangement, consequently, compare with current split type motor, the total volume of this motor only exceeds about 1/3 than motor part 2, and the total volume reduces about 1/4 than the total volume of current split type motor, has reduced the volume, has alleviateed weight, does not need the field installation, and the appearance is simplest.

As shown in fig. 5, in the present embodiment, a dc outlet cavity 152 and a control outlet cavity 151 are further disposed in the controller housing 15, and the dc outlet cavity 152 is used for accommodating a dc outlet; the control outlet cavity 151 is used for accommodating a control outlet. The direct current outlet cavity 152 and the control outlet cavity 151 can protrude out of the outer surface of the controller shell 15, and can also be located inside the outer surface of the controller shell 15, and a cable and a signal line between the motor part 2 and the controller part 1 of the motor are integrated in the controller shell 15 and the motor shell 21, so that the protection grade of the motor is improved, and can reach IP 67. Because the cable is positioned in the shell, the cable wire and the signal wire can adopt the cable with lower protection grade, the protection grade can be reduced to IP55, and the cost of the cable is reduced by 1/10 of the cost of the existing split motor; the power cable is shortened, the cable line loss is reduced, and the work of wiring is reduced on site.

Further, in the present embodiment, the controller cooling medium flow passage is provided in the controller case 15, the motor cooling medium flow passage is provided in the motor case 21, and the controller cooling medium flow passage is communicated with the motor cooling medium flow passage. Because the cooling medium flow channels are arranged in the shell and closed flow channels are adopted, the protection grade is further improved, and the cooling medium flow channels of the controller are communicated with the cooling medium flow channels of the motor, so that the medium circulation structure is simplified.

Furthermore, the cross-sectional dimensions of the controller cooling medium flow channel and the motor cooling medium flow channel are consistent, the communication tightness of the two cooling medium flow channels is improved, and the processing is simple.

As shown in fig. 1 and fig. 2, the controller component 1 is further optimized, in this embodiment, the controller component 1 includes a controller housing 15, a controller end cover 11 and a controller module located inside the controller housing 15, the controller end cover 11 is mounted at one end of the controller housing 15 far away from the motor component 2, and the controller end cover 11 and the controller housing 15 are sealed to meet the protection level of IP 67; one end of the controller shell 15 is connected with one end of the motor shell 21, the internal controller module is connected with the stator winding of the motor component 2 through the current collecting disc 24, so that assembly is convenient, the current collecting disc 24 collects small currents of windings of all phases of the motor component 2 to a total alternating current terminal, and the alternating current terminal of the current collecting disc 24 is in electrical contact with the alternating current assembly 16 of the controller component 1 in a coaxial mode, so that a power loop between the motor component 2 and the controller component 1 is communicated.

In the present embodiment, the controller module includes a power component 14, a capacitor component 13, a control component 17, a dc terminal component 12, and an ac component 16; the controller module is electrically connected to the motor part 2, specifically, the ac component 16 is connected to the stator winding of the motor part 2 through the current collecting plate 24.

The control assembly 17 is arranged at one end of the controller shell 15 close to the motor part, and the control assembly 17 is connected with the power assembly 14, the sensor and an external control signal; the power component 14 is disposed between the outer periphery of the capacitor component 13 and the inner wall of the controller case 15; a dc terminal assembly 12 is disposed between the capacitor assembly 13 and the end face of the controller end cap 11, the dc terminal assembly 12 being connected to an external dc power source, the positive and negative dc terminals of the power assembly 14, and the capacitor assembly 13. The power module 14 mainly includes a multi-layer thick copper circuit board, a semiconductor power switch, a power terminal, a control terminal, and the like. The multilayer thick copper circuit board of the power component 14 provides an electric path for the semiconductor power switch, the semiconductor power switch controls the on and off of the circuit, and the power terminal is connected with the alternating current component 16 and the direct current terminal component 12 of the controller component 1.

Further, in the present embodiment, the cross-sectional inner ring shape of the controller case 15 is a polygon, the capacitor assembly 13 includes the capacitor case 132 and the capacitor 131, and the capacitor 131 is accommodated in the capacitor case 132. The outer shape of the cross section of the capacitor shell 132 is polygonal, and the shape of the cross section of the capacitor shell 132 is the same as that of the inner ring of the cross section of the controller shell 15, and each edge of the capacitor shell 132 is in supporting connection with the corresponding edge of the inner ring of the controller shell 15, specifically, the edge of the capacitor shell 132 is in interference fit with the corresponding edge of the inner ring of the controller shell 15. The cross section inner ring of the controller shell 15 and the cross section appearance of the capacitor shell 132 are set to be polygonal, firm supporting connection of the capacitor assembly 13 and the controller shell 15 is achieved, the capacitor assembly 13 is prevented from rotating in the controller shell 15, holes do not need to be formed in the shell, connection through parts such as screws is not needed, the connection structure is simple, and the protection grade is further improved. Meanwhile, the capacitor module 13 is in contact with the controller housing 15 through the edge to provide a heat dissipation path for the capacitor module 13, and heat is transferred to the controller housing 15 through the edge and dissipated through the controller housing 15.

For optimization, the shapes of the section inner ring of the controller shell 15 and the section of the capacitor shell 132 are both hexagonal, and the positioning support connection is realized through a hexagonal structure and a six-edge structure. Of course, the cross-sectional shape may be a polygon such as a triangle, a quadrangle, a pentagon, or an octagon.

Further, as shown in fig. 4 and 5, in the present embodiment, each edge of the capacitor shell 132 is provided with a first positioning structure 1321, and each edge of the inner ring of the controller housing 15 is provided with a second positioning structure 153 which is supported and positioned with the first positioning structure 1321. The capacitor case 132 and the controller case 15 are stably and reliably supported and positioned by the first positioning structure 1321 and the positioning structure 153.

Specifically, the first positioning structure 1321 is a positioning groove, and correspondingly, the second positioning structure 153 is a positioning protrusion; or the first positioning structure 1321 is a positioning protrusion, and correspondingly, the second positioning structure 153 is a positioning groove. On one capacitor case 132, the first positioning structures 1321 may be all positioning grooves or positioning protrusions, or have both positioning grooves and positioning protrusions, and correspondingly, the second positioning structures 153 on the controller casing 15 may be all positioning protrusions or positioning grooves, or have both positioning protrusions and positioning grooves, as long as the matching, supporting and positioning of the first positioning structures 1321 and the second positioning structures 153 can be realized.

Further, in the present embodiment, the gap between the capacitor 131 and the capacitor case 132 is filled with the heat conductive adhesive for fixing the capacitor 131 and dissipating heat, so that the heat dissipation performance of the capacitor assembly 13 is improved; each inner wall surface of the controller housing 15 and the corresponding outer wall surface of the capacitor shell 132 are tightly attached to and fix one power assembly 14, the heat generated by the power assemblies 14 is uniformly distributed on the controller housing 15, and the heat dissipation capacity is maximized.

As shown in fig. 3, in the present embodiment, the power assembly 14 includes a heat generating component 142 and an elastic body 141, the heat generating component 142 is fixed on the elastic body 141, and the elasticity of the elastic body 141 enables the heat generating component 142 to be attached to the inner wall surface of the controller housing 15, so as to further reduce the thermal resistance of the power assembly 14 and achieve rapid heat dissipation.

In this embodiment, in order to protect the electrical components in the controller component 1 from heat damage, in this embodiment, a heat insulating pad is disposed between the control assembly 17 and the motor inner end cover 25 of the motor component 2.

In the embodiment, most structural parts adopt extruded aluminum profiles, and the energy consumption is lower than that of die-cast aluminum profiles.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric machine, characterized in that, comprising a machine part (2) and a controller part (1) which are coaxially arranged and integrally installed and connected, a motor casing (21) of the machine part (2) is consistent with the cross section of a controller casing (15) of the controller part (1).

2. The motor according to claim 1, wherein a direct current outlet cavity (152) and a control outlet cavity (151) are further arranged in the controller shell (15), and the direct current outlet cavity (152) is used for accommodating a direct current outlet; the control outgoing line cavity (151) is used for accommodating a control outgoing line.

3. The machine according to claim 1, characterized in that the controller cooling medium flow channel in the controller housing (15) communicates with the machine cooling medium flow channel in the machine housing (21).

4. The electric machine of claim 3 wherein the controller cooling medium flow path is of uniform cross-sectional dimensions with the machine cooling medium flow path.

5. The machine according to claim 1, characterized in that the controller part (1) comprises the controller housing (15), a controller end cap (11) and a controller module inside the controller housing (15), the controller end cap (11) being mounted at an end of the controller housing (15) remote from the machine part (1); the controller module is connected to the stator winding of the motor part (1) via a current collector plate (24).

6. The machine according to claim 5, characterized in that the controller module comprises a power component (14), a capacitor component (13), a control component (17), a direct current terminal component (12) and an alternating current component (16);

the alternating current component (16) is connected with one end of the power component (14), and the alternating current component (16) is connected with the stator winding through the current collecting disc (24);

the control assembly (17) is arranged at one end of the controller shell (15) close to the motor component (1), and the control assembly (17) is connected with the power assembly (14);

the power assembly (14) is arranged between the periphery of the capacitor assembly (13) and the inner wall of the controller shell (15);

the direct current end assembly (12) is arranged between the capacitor assembly (13) and the end face of the controller end cover (11), and the direct current end assembly (12) is connected with an external direct current power supply, positive and negative direct current terminals of the power assembly (14) and the capacitor assembly (13).

7. The electric machine according to claim 6, characterized in that the cross-sectional inner ring shape of the controller housing (15) is a polygon, the cross-sectional outer shape of the capacitor housing (132) of the capacitor assembly (13) is a polygon and is the same as the cross-sectional inner ring shape of the controller housing (15), each edge of the capacitor housing (132) is in supporting connection with the corresponding edge of the inner ring of the controller housing (15), and the capacitor housing (132) accommodates a capacitor (131).

8. The machine according to claim 7, characterized in that the gap between the capacitor (131) and the capacitor housing (132) is filled with a thermally conductive glue; and each inner wall surface of the controller shell (15) and the corresponding outer wall surface of the capacitor shell (132) are tightly attached and fixed with one power assembly (14).

9. The electric machine according to claim 8, characterized in that the power module (14) comprises an elastic body and a heat generating component fixed to the elastic body so as to be in abutment with an inner wall surface of the controller housing (15).

10. An electric machine according to any of claims 7-9, characterized in that each edge of the capacitor housing (132) is provided with a first positioning structure (1321), and each edge of the inner ring of the controller housing (15) is provided with a second positioning structure (153) in supporting positioning with the first positioning structure (1321).

11. The electric machine of claim 10, wherein the first locating feature (1321) is a locating groove and the second locating feature (153) is a locating projection;

or the first positioning structure (1321) is a positioning protrusion, and the second positioning structure (153) is a positioning groove.

12. An electric machine according to any of claims 6-9, characterized in that a heat insulating mat is arranged between the control unit (17) and the machine inner end cover (25) of the machine part (2).